suku ke-55 barisan 222,216,210...
Matematika
farid999
Pertanyaan
suku ke-55 barisan 222,216,210...
2 Jawaban
-
1. Jawaban Szchesny
Un=bn+c
Un=-6n+228
Un=-6×55+288
U55=-330+288
U55=-102 -
2. Jawaban BSunShine
U1 = 222
U2 = 216
U3 = 210
beda = -6
Un = U1 + (n-1)b
U55 = 222 + (55-1)(-6)
U55 = 222 + 54.(-6)
U55 = 222 + (-324)
U55 = -102
semoga membantu ^_^